JPH1142187A - Vacuu m cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the accuracy of displaying an indicator showing the amount of dust collected, from the value of current through a fan motor, cannot be enhanced because of differences among the fan motors. SOLUTION: The amount of air is regulated until a certain amount of air fed by a fan motor 2 is reached, and the value of current detected by a current detection means 7 at that time is stored in a storage means 8 by means of a switch 9, so that the difference between different fan motors 2 can be detected from the value. An indicator display control means 11 is used to make a corresponding judgment on the current value, so that the accuracy of display on an indicator 10 can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner used in ordinary households, and more particularly to an indicator for displaying the amount of dust collected in a dust collection chamber.

[0002]

2. Description of the Related Art An indicator display of a conventional vacuum cleaner will be described with reference to FIG.

Reference numeral 51 denotes a fan motor; 52, a fan motor driving means for driving the fan motor 51; 53, a signal sent to the fan motor driving means 52;
No. 1 is a fan motor control means for controlling the output. 54
Is an electric current detecting means, 55 is an indicator indicating the amount of dust collection, 56 is a judgment of the amount of dust collection from the current value detected by the current detecting means 54 and judges the display of the indicator 55,
And an indicator display control means for processing.

[0004]

However, in the conventional vacuum cleaner having the above configuration, the individual difference of the current value is large due to the individual difference of the fan motor, and the amount of dust collection is displayed even though the air flow is the same. There was a problem to be solved in which the display of the indicator was incorrect.

The present invention solves such a conventional problem,
Judge the individual difference of the fan motor, and according to the individual difference,
It is an object of the present invention to provide a vacuum cleaner capable of displaying a more accurate indicator.

[0006]

According to a first aspect of the present invention, there is provided a cleaner body having a dust collecting chamber and a fan motor built therein, and driving the fan motor. Fan motor drive means, fan motor control means for controlling a drive state of the fan motor, current detection means for detecting a current value flowing through the fan motor,
A storage device for storing a current value detected by the current detection unit, a switch for storing the current value detected by the current detection unit in the storage device, and an indicator for displaying a dust collection amount in the dust collection chamber And an indicator display control means for controlling display of the indicator based on the current value detected by the current detection means and the current value stored in the storage device, when the air volume is adjusted until a certain air volume is reached. The switch is pressed, and the current value at this time is stored in the storage device, so that the individual difference of the fan motor can be determined, and the indicator display can be determined according to the difference, so that the display with high accuracy can be performed. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be implemented by the embodiments described in the claims.
As in the described invention, a cleaner main body including a dust collecting chamber and a fan motor, a fan motor driving unit for driving the fan motor, a fan motor control unit for controlling a driving state of the fan motor, and the fan Current detection means for detecting a current value flowing through the motor, a storage device for storing the current value detected by the current detection means, and a switch for storing the current value detected by the current detection means in the storage device; An indicator for displaying the amount of dust collected in the dust collection chamber, and an indicator display control means for controlling the display of the indicator based on the current value detected by the current detection means and the current value stored in the storage device. By providing, when the air volume is adjusted until a certain air volume is reached, the switch is pressed, the individual difference of the fan motor is determined, and the individual Determination processing can accurate indicator display order can be things in accordance with the.

Further, according to the present invention, the fan motor driving means is controlled so that the current value detected by the current detecting means is equal to or less than a predetermined current value. A fan motor current setting means for transmitting a control signal, and a constant current value at the time of the opening operation regardless of the individual difference of the fan motor based on the current value stored in the storage device when the fan motor performs the opening operation. Opening fan motor setting means for sending a signal to the fan motor current setting means,
The power consumption during the opening operation of the fan motor can be made constant irrespective of the individual difference of the fan motor, so that the life of the fan motor can be further extended.

According to a third aspect of the present invention, a pressure detecting means is provided at an intake port of the cleaner main body, and the fan motor is fully driven by the pressure detecting means and the fan motor control means. And a constant-pressure current storage means for storing a current value detected by the current detection means when the pressure reaches a constant pressure at which the all-conduction determination means determines that all conduction is performed. The function of the invention according to claim 1 can be realized without the switch according to claim 1. Therefore, a cleaner with further improved usability can be provided.

According to a fourth aspect of the present invention, when the phase of the fan motor is controlled by the fan motor current setting means, the current value detected by the current detection means is calculated from the individual difference of the fan motor. By providing the filter means for reducing the individual difference of the generated current, it is possible to control the display of the indicator from the value passed through the filter means and to provide an accurate indicator.

According to a fifth aspect of the present invention, there is provided a power supply voltage detecting means, and a current correcting means for correcting a current value corresponding to a voltage fluctuation from the power supply voltage detected by the power supply voltage detecting means. Thereby, a more accurate indicator can be provided.

[0012]

【Example】

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.

In FIGS. 1 and 2, reference numeral 1 denotes a cleaner main body, and reference numeral 2 denotes a fan motor in the cleaner main body 1. Reference numeral 3 denotes a dust collection chamber for collecting dust, and reference numeral 4 denotes an intake port for sucking dust from the outside of the cleaner body 1 to the dust collection chamber 3. 5 is a fan motor driving means for driving the fan motor 2;
Is a fan motor control means for setting and sending a control signal of the fan motor 2 to the fan motor drive means 5. Reference numeral 7 denotes current detection means for detecting a current flowing through the fan motor 2, reference numeral 8 denotes storage means for storing a current value detected by the current detection means 7, and reference numeral 9 denotes a current detected by the current detection means 7 in the storage means 8. This is a switch for storing a value. 1
Reference numeral 0 denotes an indicator for displaying the amount of dust collected in the dust collection chamber 3, and reference numeral 11 denotes indicator display control means for judging and controlling the display of the indicator 10.

The operation of the above configuration is as follows.
Fan motor driving means 5 by fan motor control means 6
The fan motor driving means 5 drives the fan motor 2 in response to the signal. At this time, the current flowing through the fan motor 2 is detected by the current detecting means 7. This current value differs depending on the individual difference of the fan motor 2 even if the fan motor driving means 5 outputs the same signal to the fan motor 2. Therefore, when the air volume is adjusted at the position of the intake port 4 until a certain air volume is reached, the switch 9 is operated,
The current value at this time is stored in the storage device 8. In actual use, the individual difference of the fan motor 2 is determined from the stored current value, and the indicator display control means 1 is accordingly determined.
Since 1 can judge and process the current value, the indicator 10 has a simple structure as compared with the related art, and enables very accurate display. Further, when the display of the indicator 10 continues, the conventional air protector (not shown) can be abolished by controlling the fan motor driving means 5 to lower the power of the fan motor 2,
Lighter weight and simplified structure can be achieved.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. Example 1 above
The same components as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 3, reference numeral 12 denotes a fan motor which sends a phase control signal to the fan motor driving means 5 so that the fan motor 2 operates at a current value detected by the current detecting means 7 at a predetermined current value or less. The current setting means 13 is a fan motor current setting means 1 so that the fan motor 2 has a constant current value when the fan motor 2 performs the opening operation.
2 is an open fan motor setting means for sending a signal to 2.

The operation of the above configuration is as follows.
The fan motor current setting means 12 sends a signal to the fan motor driving means 5 so that the current flowing through the fan motor 2 does not exceed a set current value, that is, does not exceed a certain power consumption. The individual difference of the motor 2 is determined from the contents of the storage device 8 and the open fan motor setting means 13 sends the fan motor current setting means 12 to the fan motor current setting means 12 so that the power consumption becomes constant during the opening operation regardless of the individual difference of the fan motor 2. By transmitting the signal, the fan motor 2 can be operated with the same power consumption regardless of the individual difference of the fan motor 2 and the life of the fan motor 2 can be extended from the relationship between the air volume and the power consumption as shown in FIG. it can.

(Embodiment 3) Next, Embodiment 3 of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 14 denotes a pressure detecting means provided in the vicinity of the intake port 4. Reference numeral 15 denotes a full conduction judgment for judging whether the pressure value detected by the pressure detecting means 14 and the fan motor control means 6 are in a full conduction state. Means. Reference numeral 16 denotes a constant pressure current storage unit that stores a current value detected by the current detection unit 7 when the pressure is constant.

The operation of the above configuration is as follows.
When the pressure detected by the pressure detecting means 14 reaches a certain value, the all-conduction determining means 15 confirms that the circuit is fully conducting together with the output of the fan motor control means 6, and checks the constant-pressure current storage means 16 The current storage means 16 stores a current value detected by the current detection means 7 at a constant pressure. Thus, indicator display control can be performed without depending on individual differences of the fan motor 2.
The functional effects of the invention according to the description can be performed without an external operation of pressing a switch as in the first embodiment.

(Embodiment 4) Next, Embodiment 4 of the present invention will be described with reference to FIGS. Example 1 above
The same components as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 17 denotes filter means for reducing the current value detected by the current detection means 7 to reduce the individual difference of the current caused by the individual difference of the fan motor when the fan motor current setting means 12 controls the phase of the fan motor. is there.

The operation of the above configuration is as follows.
FIG. 7 shows the characteristic of the fan motor 2 when the air volume of the central object becomes the indicator operation point and the variation range of the operation point due to individual differences of the fan motor. At this time, when the phase of the fan motor is normally controlled by the fan motor current setting means 12 as indicated by a dashed line, the relationship between the current value and the air flow is represented by a low slope, and the error is large with respect to the individual difference of the fan motor (fluctuation). Width b)
If the inclination is changed through the filter means 17 as shown by the solid line in FIG. 7, the influence of the individual difference of the fan motor can be reduced (variation width a), and the accuracy of the indicator can be improved.

Fifth Embodiment Next, a fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 18 denotes a power supply voltage detecting means. Reference numeral 19 denotes a voltage correcting means for correcting a fluctuation of the voltage obtained by the power supply voltage detecting means 18 to the current value detected by the current detecting means.

The operation of the above configuration is as follows.
The effect of the variation of the power supply voltage detected by the power supply voltage detection means on the current value detected by the current detection means is corrected by the voltage correction means. A more accurate current value determination can be performed.

[0027]

According to the first aspect of the present invention, since the individual difference of the fan motor can be determined from the current value, the indicator can be operated according to the current value, and a highly accurate indicator can be provided. Also, if the display of the indicator continues, by controlling the fan motor driving means to lower the power of the fan motor,
A conventional air protector can be eliminated, and a cleaner with a more simplified structure can be provided.

According to the second aspect of the present invention, since the power consumption during the opening operation of the fan motor can be made constant regardless of the individual difference of the fan motor, the life of the fan motor can be further extended.

According to the third aspect of the present invention, the function described in the first aspect can be realized without performing an external operation such as a switch in the first aspect, and a cleaner with improved usability is provided. Can be provided.

According to the invention of claim 4 of the present invention, since the individual difference of the current caused by the individual difference of the fan motor can be reduced by the filter means, the accuracy of the indicator can be improved.

According to the invention of claim 5 of the present invention, it is possible to correct the fluctuation of the power supply voltage, so that the operation of the indicator with higher accuracy can be realized.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a vacuum cleaner main body of a vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a system block diagram of the vacuum cleaner according to the first embodiment of the present invention.

FIG. 3 is a system block diagram of a vacuum cleaner according to a second embodiment of the present invention.

FIG. 4 is a diagram illustrating a relationship between an air volume and power consumption according to a second embodiment of the present invention.

FIG. 5 is a system block diagram of a vacuum cleaner according to a third embodiment of the present invention.

FIG. 6 is a system block diagram of a vacuum cleaner according to a fourth embodiment of the present invention.

FIG. 7 is a diagram illustrating a relationship between an air volume and a current value according to a fourth embodiment of the present invention.

FIG. 8 is a system block diagram of a vacuum cleaner according to a fifth embodiment of the present invention.

FIG. 9 is a system block diagram of a conventional vacuum cleaner.

[Explanation of symbols]

 2 Fan motor 5 Fan motor driving means 6 Fan motor control means 7 Current detection means 8 Storage means 9 Switch 10 Indicator 11 Indicator display control means 12 Fan motor current setting means 13 Fan motor setting means at opening 14 Pressure detection means 15 Full conduction judgment Means 16 Constant pressure current storage means 17 Filter means 18 Power supply voltage detection means 19 Voltage correction means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Masakazu Fukushima, Inventor 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] A cleaner main body including a dust collecting chamber and a fan motor; a fan motor driving unit for driving the fan motor; a fan motor control unit for controlling a driving state of the fan motor; Current detection means for detecting a flowing current value, a storage device for storing a current value detected by the current detection means, a switch for storing the current value detected by the current detection means in the storage device, An indicator for displaying the amount of dust collected in the dust collection chamber, and indicator display control means for controlling display of the indicator based on the current value detected by the current detection means and the current value stored in the storage device. Vacuum cleaner. 2. A fan motor current setting means for transmitting a phase control signal to a fan motor driving means so that the fan motor operates at a current value detected by a current detecting means at a predetermined current value or less; An opening fan that sends a signal to the fan motor current setting means so that a constant current value is obtained during the opening operation regardless of the individual difference of the fan motor based on the current value stored in the storage device when the motor performs the opening operation. The vacuum cleaner according to claim 1, further comprising a motor setting unit. 3. A cleaner main body having a dust collecting chamber and a fan motor therein and having an intake port, fan motor driving means for driving the fan motor, and fan motor control means for controlling a driving state of the fan motor. Current detecting means for detecting a current value flowing to the fan motor, pressure detecting means provided at an intake port of the cleaner main body, and the pressure sensor and the fan motor control means change the fan motor to a full conduction driving state. All-conduction determining means for determining; constant-pressure-current storing means for storing a current value detected by the current detecting means when the pressure reaches a constant pressure at which the all-conducting determining means determines that all conduction is performed; and An indicator for displaying the amount of dust collection, and a current value detected by the current detection means and a current value stored in the constant pressure current storage means. An electric vacuum cleaner comprising: indicator display control means for controlling display. 4. A filter means for reducing a current difference detected by the current detection means to reduce an individual difference of a current generated from an individual difference of the fan motor when a phase of the fan motor is controlled by the fan motor current setting means. 4. The electric vacuum cleaner according to claim 1, wherein display of the indicator is controlled based on the value passed through the filter. 5. The electric cleaning apparatus according to claim 1, further comprising power supply voltage detection means, and current correction means for correcting a current value corresponding to a voltage change from the power supply voltage detected by the power supply voltage detection means. Machine.